Prepn of high-rate lithium ion battery cathode material |
Title： |
| Prepn of high-rate lithium ion battery cathode material |
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Application Number： |
02149177 |
Application Date： |
2002/11/28 |
Announcement Date： |
2003/05/14 |
Pub. Date： |
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Publication Number： |
1417874 |
Announcement Number： |
1194430 |
Grant Date： |
2005-3-23 |
Granted Pub. Date： |
2005-3-23 |
ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
H01M 4/04, H01M 4/48, H01M 4/58, C01D 15/02 |
Applicant(s)： |
Tsinghua Univ. |
Inventor(s)： |
Qiu Xinping, Chen Hailong, Zhu Wentao |
Key Words： |
Prepn, high-rate, lithium ion battery, cathode material |
Abstract： |
In the preparation of the cathode material, soluble lithium salt, cobalt salt, nickel salt, etc. in polar organic solvent, and organic solution of hydroxide are coprecipitated and the precipitate is stoved and ground to obtain nano level cathode material grains; the grains are mixed with carbon black and polyvinylidene fluoride in certain proportion, added with solvent and the mixture is prepared into the cathode material plate via curtain coating process. The lithium battery with the cathode material has the advantages of high voltage, high capacity, long circulation life and high safety. The lithium battery may be used in portable electronic equipment, electric vehicle space equipment, etc. The new cathode material makes the lithium battery capable of being charged and discharged in high rate and this is significant for the application of lithium battery in great power device. |
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 Relevancy information |
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| Last Update |
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2008-4-17 |
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Selected patents owned by Tsinghua University filed in 2005 are loaded. |
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2008-3-31 |
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Selected patents owned by Tsinghua University filed in 2006 and 2007 are load. |
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